ISO/FDIS 622
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Coal and coke — Determination of phosphorus — Reduced molybdophosphate photometric method
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11-03-2025
25-06-2025
This document specifies a reduced molybdophosphate photometric method for the determination of the total phosphorus mass fraction of hard coal, lignites and coke. Two methods for taking the phosphorus into solution are specified, namely extraction from the coal or coke ash with acid or by repeated oxidation of the coal or coke, by acid, to remove carbonaceous matter.
| Committee |
ISO/TC 27/SC 5
|
| DocumentType |
Draft
|
| Pages |
8
|
| PublisherName |
International Organization for Standardization
|
| Status |
Superseded
|
| Supersedes |
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